DayandNight MV Blower Specs.pdf

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MODULAR BLOWER: MV4. Use field installed vibration isolators in auxiliary drain panto support cabinet.DUCT CONNECTIONSSUPPLY DUCTSupply duct must be attached to the outside of flange on outletend of unit. Flexible connectors may be used if desired. Maintainclearances from supply duct to combustibles when heaters areinstalled. Refer to Figure 1 and unit rating plate.RETURN DUCTReturn duct should be attached to bottom of unit using sheetmetal screws or other fasteners.FILTER INSTALLATIONFilters must be field supplied. A remote filter grille or other meansmust be provided. Refer to ACCA Manual D for remote filtersizing.Figure 5Horizontal InstallationSee NoteBelowFigure 6ABCDEFLOW VOLTAGE TERMINAL BLOCK5AMPFUSEVIOBLUORNBLKSEC1AUX HEAT KW/CFMA B C DINSTALLATION INSTRUCTIONSSEC2AC/HP SIZEA B C DSYSTEM TYPEAC HP -COMFORT HP--EFFAC/HP CFM ADJUSTNOM LOHION/OFF DELAYENHFan Control BoardJ2DhRW1W 2 Y1Y/Y 2GOCWHTCONTINUOUS FANLO MED HI YELAUX1 HUM1YELCEBD430226--01B CESS430226--01BAUX2 HUM230 024VAC90 0HEATER/MOTORGRYJ1J2 JUMPERMOLEX 12--PIN CONNECTORRefrigerantLinesVibrationField-FabricatedIsolatorsDrain PanSupports MUST run parallel with blower cabinetDrainLinesNOTE: If increased structural strength is needed in thehorizontal position, use field supplied connecting plates inplace of the tabs on the bottom of the blower.ELECTRICAL CONNECTIONSThe MV modular blower utilizes a variable--speed constant CFMblower motor with an electronic fan control board. The fan controlboard contains a low voltage protective fuse (5 AMP), and pigtailconnections for thermostat hook up. The fan control also containsselection taps to modify airflow operation based uponpre--programmed airflow tables.All electrical work MUST conform with the requirements of localcodes and ordinances and the National Electrical Code NFPA 70current edition.The low voltage transformer and the fan control are standard onall models and are prewired at the factory. Line voltageconnections are made to the heater accessory or the lugs on theNo Heat Kit.OVERCURRENT PROTECTIONThe power supply wiring to the unit MUST be provided withovercurrent protection. Governing codes may require this to befuses ONLY or circuit breakers.For blower cabinets without heaters, a 15 amp circuit may beused.Before proceeding with electrical connections, make certain thatsupply voltage, frequency, phase, and circuit ampacity are asspecified on the unit rating plate. See unit wiring label for properfield high and low voltage wiring. Make all electrical connectionsin accordance with the NEC and any local codes or ordinancesthat may apply. Use copper wire only. The unit must have aseparate branch electric circuit with a field--supplied disconnectswitch located within sight from and readily accessible from theunit.NOTE: When a pull--out type disconnect is removed from the unit,only the Load side of the circuit is de--energized. The Line sideremains live until the main (remote) disconnect is turned off.!ELECTRICAL SHOCK or UNIT DAMAGE HAZARDFailure to follow this warning could result in personalinjury, death, and/or property damage.If a disconnect switch is to be mounted on unit,select a location where drill and fasteners will notcontact electrical refrigeration components.!ELECTRICAL SHOCK or UNIT DAMAGE HAZARDFailure to follow this warning could result in personalinjury, death, and/or property damage.Turn OFF electric power at fuse box or servicepanel before making any electrical connectionsand ensure a proper ground connection is madebefore connecting line voltage.442 01 2305 014
INSTALLATION INSTRUCTIONS!ELECTRICAL SHOCK HAZARDFailure to follow this warning could result in personalinjury or death.Turn off the main (remote) disconnect device beforeworking on incoming (field) wiring. Incoming(field) wiring on the line side of the disconnectfound in the modular blower unit remains live,even when the pull -out is removed. Service andmaintenance to incoming (field) wiring cannot beperformed until the main disconnect switch (remoteto the unit) is turned off.MV units installed without electric heat require the use of afactory--authorized No Heat Kit (accessory part numberEHIA00KN10). This kit provides the electrical connectionsnecessary to supply the unit with 208/230V power when electricheat is not present.For units without electric heat:1. Locate adapter and filler plates with screws insidepackage. If necessary, adjust plates to allow forinstallation of No Heat Kit required inside cabinet. Referto Figure 7.2. Secure No Heat Kit accessory with four (4) screws.3. Connect the 9--pin plug from No Heat Kit wiring into thereceptacle that attaches to fan control board.4. Connect ground wire to unit ground lug.5. Connect 208/230V power leads from field disconnect toterminal block assembly on No Heat Kit.For units with electric heat, see Electric Heater InstallationInstructions and blower airflow requirements.NOTE: Transformer is factory--wired for 230V operation. For208V applications the transformer must be rewired to the 208Vtap. Refer to unit wiring label.GROUNDING CONNECTIONUse a copper conductor(s) from the ground lug on the No Heat Kitor ground lugs on the electric heater to a grounded connection inthe electric service panel or a properly installed grounding rod.LOW VOLTAGE CONTROL CONNECTIONSWire low--voltage in accordance with wiring label on the blower(refer to Figures 8 - 11). Use 18 AWG color--coded, insulated(35°C minimum) wire to make the low--voltage connectionsbetween: thermostat, indoor equipment, and outdoor equipment.If thermostat is located more than 100 feet from the unit (asmeasured along the low voltage wire), use 16 AWG color--coded,insulated (35°C minimum) wire. All wiring must be NEC Class 1and must be separated from incoming power leads. Refer tooutdoor unit wiring instructions for additional wiringrecommendations.MODULAR BLOWER: MVField supplied low--voltage wiring should be field connectedinside control splice box area (secure with wire nuts), and strainrelief bushing or rubber grommet to seal cabinet opening.Fan control board is circuited for single--stage heater operation.When additional heater staging is desired (using indoor wallthermostat or ODTS), remove the Jumper J2 on fan control boardto enable staging.THERMOSTAT FIELD CONNECTIONSDh Dh is used if additional latent capacity control is required(see Dehumidification Capability in the Accessoriessection for more detail). NOTE: the J1 jumper shouldalready be removed from the factory.R R signal is 24V hot to thermostatW1 W1 signal controls electric heat from the thermostatW2 W2 signal from a two--stage thermostat or outdoorthermostatY1 Connection for the low speed compressor operationY/Y2 Connection for the Y signal or high speed (Y2) signalfrom the thermostatG Connection for the G (fan) signal is energized from thethermostat, ’HUM2’ and AUX2’ terminals are energizedwhen G energizedO Connection for the ’O’ signal from the thermostatC Connection for the C terminal to the thermostat (24Vcommon) also common to SEC1, HUM1, AUX1Figure 7Low VoltageConnectionsFiller PlateAdapter PlateNo Heat KitElectrical ControlsTransformerLugs forLine Voltageand GroundConnectionsControl Splice BoxTable 1Supply CircuitVolts Phase HertzSupplyCircuitNo.H.P.Max.MotorAmpsMCABranchCircuitAMPMax Over -currentProtectionDevise(Amps)#ofWiresRecommendedSupply Wire75°C copperGround Wire5 442 01 2305 01MinSizeMax. Ft.Length#ofWiresMV08*2082301 60 Single 1/2 5.0 6.3 15 2 14 118 1 14MV12*2082301 60 Single 1/2 5.0 6.3 15 2 14 118 1 14MV16*2082301 60 Single 3/4 7.3 9.1 15 2 14 82 1 14MV20*2082301 60 Single 3/4 7.3 9.1 15 2 14 82 1 14* Modular blower without electric heat Conversion: 1 ft = .305 meterMinSize
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